Gaseous sample injection valve and gaseous sample injection method using same
US9551431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Nov 24, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0495
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a gaseous sample injection valve. The gaseous sample injection valve includes a middle body injecting a fixed amount of a gaseous sample into the vacuum chamber of a mass spectrometer, the middle body being constituted by a gaseous sample injection tube, a gaseous sample discharge tube, a storage part, and a vacuum chamber connection tube; an upper body accommodating a first solenoid coil, a first plunger, and a first packing; and a lower body accommodating a second solenoid coil, a second plunger, and a second packing. The gaseous sample injection valve according to the present invention may be miniaturized to utilize a lightweight portable mass spectrometer. Also, the vacuum pump may be reduced in load to extend the operation life-cycle of the vacuum pump. In addition, when the gaseous sample is analyzed by using the mass spectrometer, a uniform mass spectrum with respect to the gaseous sample may be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.